package com.net.framework.help.utils;

import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;

/**
 * Author：xiaobin.zhang
 * Email：154722566@qq.com
 * Date：2016/9/18 10:55
 * Desc：<--图片叠加-->
 */
public class ImageOverlay {
    /**
     * @param icon_btMap 本地的icon
     * @param btMap2     网络图片
     */
    public static Bitmap overlay(Bitmap icon_btMap, Bitmap btMap2, int margin) {
        if (icon_btMap == null) {
            return null;
        }
        int bgWidth = icon_btMap.getWidth();
        int bgHeight = icon_btMap.getHeight();
        Bitmap bt = createFramedPhoto(bgWidth - margin, bgWidth - margin, btMap2, 90);
        //创建一个新的和icon_btMap长度宽度一样的位图
        Bitmap newbmp = Bitmap.createBitmap(bgWidth, bgHeight, Bitmap.Config.ARGB_8888);
        Canvas cv = new Canvas(newbmp);
        cv.drawBitmap(icon_btMap, 0, 0, null);//在 0，0坐标开始画入bg
        cv.drawBitmap(bt, margin / 2, margin / 2, null);//在 0，0坐标开始画入fg ，可以从任意位置画入
        cv.save();//保存
        cv.restore();//存储
        return newbmp;
    }

    /**
     * 转换图片成圆形
     *
     * @param bitmap 传入Bitmap对象
     * @return
     */
    public static Bitmap toRoundBitmap(Bitmap bitmap) {
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        float roundPx;
        float left, top, right, bottom, dst_left, dst_top, dst_right, dst_bottom;
        if (width <= height) {
            roundPx = width / 2;
            top = 0;
            bottom = width;
            left = 0;
            right = width;
            height = width;
            dst_left = 0;
            dst_top = 0;
            dst_right = width;
            dst_bottom = width;
        } else {
            roundPx = height / 2;
            float clip = (width - height) / 2;
            left = clip;
            right = width - clip;
            top = 0;
            bottom = height;
            width = height;
            dst_left = 0;
            dst_top = 0;
            dst_right = height;
            dst_bottom = height;
        }
        Bitmap output = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(output);
        final int color = 0xff424242;
        final Paint paint = new Paint();
        final Rect src = new Rect((int) left, (int) top, (int) right, (int) bottom);
        final Rect dst = new Rect((int) dst_left, (int) dst_top, (int) dst_right, (int) dst_bottom);
        final RectF rectF = new RectF(dst);
        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        canvas.drawBitmap(bitmap, src, dst, paint);
        return output;
    }


    /**
     * 创建圆角图片
     *
     * @param x              图像的宽度
     * @param y              图像的高度
     * @param image          源图片
     * @param outerRadiusRat 圆角的大小
     * @return 圆角图片
     */
    public static Bitmap createFramedPhoto(int x, int y, Bitmap image, float outerRadiusRat) {
        //根据源文件新建一个darwable对象
        Drawable imageDrawable = new BitmapDrawable(image);
        // 新建一个新的输出图片
        Bitmap output = Bitmap.createBitmap(x, y, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(output);
        // 新建一个矩形
        RectF outerRect = new RectF(0, 0, x, y);
        // 产生一个红色的圆角矩形
        Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
        paint.setColor(Color.RED);
        // 利用画笔画出一个矩形，第二个参数和第三个参数就是我们方法的传进来的圆角角度
        canvas.drawRoundRect(outerRect, outerRadiusRat, outerRadiusRat, paint);
        // 将源图片绘制到这个圆角矩形上
        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        imageDrawable.setBounds(0, 0, x, y);
        canvas.saveLayer(outerRect, paint, Canvas.ALL_SAVE_FLAG);
        imageDrawable.draw(canvas);
        canvas.restore();
        return output;
    }


    /**
     * 将图片的四角圆化
     *
     * @param bitmap      原图
     * @param roundPixels 圆滑率
     * @param half        是否截取半截
     * @return
     */
    public static Bitmap getRoundCornerImage(Bitmap bitmap, int roundPixels, int half) {
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        //创建一个和原始图片一样大小位图
        Bitmap roundConcerImage = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        //创建带有位图roundConcerImage的画布
        Canvas canvas = new Canvas(roundConcerImage);
        //创建画笔
        Paint paint = new Paint();
        //创建一个和原始图片一样大小的矩形
        Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
        RectF rectF = new RectF(rect);
        // 去锯齿
        paint.setAntiAlias(true);
        //画一个和原始图片一样大小的圆角矩形
        canvas.drawRoundRect(rectF, roundPixels, roundPixels, paint);
        //设置相交模式
        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        //把图片画到矩形去
        canvas.drawBitmap(bitmap, null, rect, paint);
        switch (half) {
            case HalfType.LEFT:
                return Bitmap.createBitmap(roundConcerImage, 0, 0, width / 2, height);
            case HalfType.RIGHT:
                return Bitmap.createBitmap(roundConcerImage, width / 2, 0, width / 2, height);
            case HalfType.TOP:
                return Bitmap.createBitmap(roundConcerImage, 0, 0, width, height / 2);
            case HalfType.BOTTOM:
                return Bitmap.createBitmap(roundConcerImage, 0, height / 2, width, height / 2);
            case HalfType.NONE:
                return roundConcerImage;
            default:
                return roundConcerImage;
        }
    }

    static class HalfType {
        public static final int LEFT = 1;
        public static final int RIGHT = 2;
        public static final int TOP = 3;
        public static final int BOTTOM = 4;
        public static final int NONE = 0;
    }
}
